package io.gitee.yth.design.pattern.test.core.pattern.structural.facade.code.subsystem;

/**
 * @author yth
 * @since 2023-04-27-0:01
 */
public class Screen {

    private static final Screen instance = new Screen();

    public static Screen getInstance() {
        return instance;
    }

    private Screen() {
    }

    public void up() {
        System.out.println("Screen::up()");
    }

    public void down() {
        System.out.println("Screen::down()");
    }

}
